1233893 (1) 玖、發明說明 【發明所屬之技術領域】. 本發明涉及一種自行車用輪轂，特別是，涉及一種將 車輪相對於自行車的車架可自由回轉地安裝著的自行車輪 轂。 【先前技術】 在自行車車輪上，用於將車輪可自由回轉地安裝到自 行車的車架上的輪轂設置在車輪的中心。以往的輪穀具有 以不可回轉的方式安裝到車架上的輪轂軸、配置在輪轂軸 外周側上的輪轂體、位於輪轂軸和輪轂體之間的左右一對 軸承。 輪轂軸兩端的外周上形成外螺紋部。在輪轂體的外周 上形成左右一對輪轂凸緣，用於緊固與車輪的輪圈連接的 輻條。軸承具有在輪轂體內部與輪轂體設置成一體或分體 的滾珠座、帶有與輪轂軸的外螺紋部螺紋配合的內螺紋部 並擰入輪轂軸中的滾珠推壓件以及裝入滾珠座和滾珠推壓 件之間的多個滾珠。滾珠裝入在周向以規定的間隔配置的 保持器中，並且以裝入保持器中的狀態下配置在滾珠推壓 件和滾珠座之間。滾珠推壓件通過裝在其軸向外方的鎖緊 螺母而止轉。 如此構造的以往輪轂的裝配作業按下述方式進行。 首先，在輪轂體安裝到輪轂軸上、滾珠座爲分體件 時，將滾珠座安裝到輪轂體上。然後，將裝在保持器中的 -4 - i (2) 1233893 滾珠安裝到滾珠座中，並塗布潤滑脂。當裝上滾珠時，從 輪轂軸的左右，擰入滾珠推壓件，以將輪轂體可自由回轉 地設置在輪轂軸上。此時，調整輪轂體的軸向位置的同 時，進行調整滾珠推壓件的推壓狀況的所謂滾珠接觸狀態 的調整。最後，用鎖緊螺母進行滾珠推壓件的止轉。 前述以往的結構中，由於必須從輪轂軸的兩端裝上滾 珠推壓件來進行滾珠接觸狀態的調整，滾珠接觸狀態調整 成爲一項煩瑣的作業。但是，爲了使擰入的滾珠推壓件止 轉，必須有鎖緊螺母，其止轉作業也很麻煩。 【發明內容】 本發明的目的是，容易實現滾珠接觸狀態的調整作業 和滾珠推壓件的止轉作業。 本發明第1方案的自行車用輪轂爲將車輪相對自行車 的車架可自由回轉地安裝用的輪轂，具有輪轂軸，輪轂 體’ 一對軸承和止轉部件。輪轂軸不能回轉地安裝在車架 上並且一端側具有外螺紋部和與外螺紋部的軸方向外方鄰 接而成的第1連接固定部。轂體具有左右一對第1和第2 輪轂凸緣’並且位於輪轂軸的外周側。一對軸承位於輪穀 體與輪轂軸之間，具有設置在輪轂體上的左右一對第1和 第2滾珠座，帶有與輪轂軸的外螺紋部螺紋配合的內螺紋 部以及止轉用的第2連接固定部的第1滾珠推壓件，在輪穀 軸的另一端側設置成相對輪轂軸不能回轉的第2滚珠推壓 件，以及在兩個滾珠推壓件和雨個滾珠座之間分別與兩者 (3) 1233893 以接觸方式滾動的滾珠。止轉部件是將第1滾珠推壓件相 對輪轂軸止轉的止轉.部件，在該止轉部件的內周側具有在 1個或多個回轉相位的任一處與輪轂軸的第1連接固定部不 能回轉地接合的第1接合部，和在多個或1個回轉相位的任 一處與第1滾珠推壓件的第2連接固定部不能回轉地接合的 第2接合部。 在裝配該自行車用輪轂之際，首先，在第2滾珠推壓 件爲分體情況下，將第2滾珠推壓件固定到輪轂軸的另一 端側。然後，在滾珠座爲分體情況下將滾珠座裝到輪轂體 上。在該狀態下，將滾珠裝到第2滾珠推壓件上，將輪轂 體從輪轂軸的一端側裝到輪轂軸的外周側。該作業時如將 一端側向上並將輪轂軸直立設置則容易實現。裝上輪轂體 後，將滾珠裝到第1滾珠座上，使第1滾珠推壓件與輪轂軸 螺紋配合，以進行滾珠接觸狀態的調整作業。滾珠接觸狀 態的調整作業結束後，在將止轉部件的第1接合部與輪轂 軸的第1連接固定部相配合的狀態下，調整第1滾珠推壓件 的回轉相位，以使第2接合部與第2連接固定部配合，或者 將止轉部件的第2接合部與止轉部件的第2連接固定部相配 合的狀態下，調整輪轂軸的回轉相位，以使第1接合部與 第1連接固定部相配合，由此，以將止轉部件相對輪轂軸 和第2滾珠推壓件不能回轉地安裝著。 在此，由於只回轉第1滾珠推壓件來進行滾珠接觸狀 態的調整作業，容易進行滾珠接觸狀態調整作業。另外， 由於只與回轉相位相一致地裝上止轉部件來進行第1滾珠 -6 - (4) 1233893 推壓件的止轉，也容易進行止轉作業。 本發明第2方案的自行車用輪轂是在本發明第1方案的 輪轂中，輪轂軸具有至少第1端側中空並且設有第1和第2 滾珠推壓件的第1軸部，和帶有防止止轉部件脫落用的凸 緣部並且與第1軸部的一端側內周面螺紋配合的第2軸部。 此時，由於通過第2軸部可防止止轉部件脫落，止轉部件 不必設有止脫用的構造。 本發明第3方案的自行車用輪轂爲，在本發明第1或第 2方案的輪轂中，輪轂軸爲內部貫通有相對車架可容易裝 脫的快速釋放機構的中空軸。此時，容易進行具有快速釋 放機構的輪轂的滾珠接觸狀態調整作業和止轉調整作業。 本發明第4方案的自行車用輪轂爲，在本發明第丨〜3 任一方案的輪轂中，止轉部件爲具有第1內周面和直徑小 於第1內周面的第2內周面的筒狀部件，輪轂軸的第1連接 固定部具有在輪轂軸的一端側外周面上相互平行設置的倒 角部，第1滾珠推壓件的第2連接周定部具有由在外周面上 沿周向形成多個凹凸而成的第2鋸齒形部，止轉部件的第1 接合部具有在第2內周面上相互平行而成的長圓形的隙 縫，止轉部件的第2接合部具有爲了與第2鋸齒形部接合而 在第1內周面上形成的第1鋸齒形部。此時，在將止轉部件 的隙縫與輪轂軸的倒角部相配合地裝上止轉部件後，爲了 使第1鋸齒形部與第2鋸齒形部相配合，回轉第1滾珠推壓 件以將止轉部件裝到第1滾珠推壓件上時，使第1滾珠推壓 件止轉。在此，由於靠具有多個凹凸的鍵齒形部止轉，使 -7- (5) 1233893 兩個鋸齒形部嚙合的回轉相位變多’可在不影響軸回轉的 範圍內，將止轉部件裝到第1滾珠推壓件上。 本發明第5方案的自行車用輪轂爲’在本發明第1〜4 任一方案的輪轂中’第1滾珠推壓件的內周面壓入與輪轂 軸的外螺紋部的軸方向內方鄰接的部分。此時，由於第1 滾珠推壓件被壓入，第1滾珠推壓件很難進一步回轉。 本發明第6方案的自行車用輪轂爲，在本發明第1〜5 任一方案的輪轂中，第2滾珠推壓件爲以壓入方式固定在 輪轂軸上的另外的部件。此時，由於第2滾珠推壓件爲另 外的部件，變更輪轂軸的材質可使輪轂軸輕質且維持高的 強度。 本發明第7方案的自行車用輪轂爲，在本發明第5方案 的輪轂中，輪轂軸爲鋁合金製成，第1和第2滾珠推壓件爲 鐵系合金製成。此時，只是易磨損的滾珠推壓件採用鐵系 合金製成，可輕質且維持耐磨性能。 本發明第8方案的自行車用輪轂爲，在本發明第1〜7 任一方案的輪轂中，輪轂軸裝在自行車的前叉上。此時， 爲了空轉要求特別輕的前輪用的輪轂的滾珠接觸狀態的調 整作業及止轉作業容易進行。 【實施方式】 在圖1中，採用本發明一實施例的自行車1〇1具有包含 前叉9 8的車架1 〇 2，固定到前叉9 8上的把手1 0 4，由鏈條、 腳蹬和撥鏈器等構成的驅動部1 05，以及裝在車架1 〇2的前 (6) 1233893 後並有輻條9 9的前輪和後輪1 〇 6、1 Ο 7。 在圖2中，前輪轂1爲，通過具有凸輪桿5 1和螺母5 2的 公知的快速釋放機構5 0而將輪轂軸1 0的兩端固定到左右兩 方的前叉98上，輻條99固定到兩輪轂凸緣1 la、1 lb上。 前輪轂1具有固定在前叉9 8上的輪轂軸1 〇，配置於輪 轂軸1 〇外周側的輪轂殻1 1，位於輪轂軸1 〇和輪轂殼1 1之間 的第1和第2軸承1 3、1 4，以及將第1軸承1 3的第1滾珠推壓 件3 2相對輪轂軸10止轉的止轉部件15。 輪轂軸10由例如強度高的A7075鋁合金製成，其兩端 借助於快速釋放機構50固定到前叉98的前端部上。輪轂軸 1 〇的內部穿過快速釋放機構5 0，並且該軸具有中空的第1 軸部1 6和與第1軸部螺紋配合的中空的第2軸部1 7。 第1軸部1 6爲構成輪轂軸1 0大部分的軸，在兩個端部 裝有兩個軸承13、14的同時，一端（圖2的左端）與第2軸 部1 7螺紋配合。在第1軸部1 6的一端側外周面上形成與第1 軸承1 3的第1滾珠推壓件32螺紋配合的外螺紋部1 6a，在一 端內周面上形成與第2軸部1 7螺紋配合的內螺紋部1 6b。另 外，在一端外周面上形成第1連接固定部1 6 g，該連接固定 部16g由與止轉部件15不能回轉地方式連接固定的、相互 平行配置的倒角部構成。 在第1軸部1 6的另一端側，形成壓入並固定第2軸承1 4 的第2滾珠推壓件3 5的壓入部1 6 c，以及在軸方向外方與壓 入部1 6c鄰接以用於定位的突起部1 6d。另外，在另一端 (圖2的右端）形成固定前叉9 8的小徑的叉固定部1 6 e。在 (7) 1233893 與叉固疋部1 6 e成階梯部分的端面形成放射狀凹凸構成的 用於止住前叉9 8轉動的滾花部丨6 f。 第2軸部17爲直徑小於第1軸部16的筒狀部件，在圖2 右端的外周面上形成與第1軸部丨6的內螺紋部丨6 b螺紋配合 的外螺紋部1 7 a。而在左端形成固定前叉9 8的小徑的叉固 疋部1 7 b。在與叉固定部1 7 b成階梯部分的端面形成放射狀 凹凸構成的、用於止住前叉9 8轉動的滾花部丨7 c。在外螺 紋部17a與叉固定部17b之間形成大徑的凸緣部17d。凸緣 部17d設置成防止止轉部件15脫落。在第2軸部17的一端側 內周面形成可由工具回轉的具有6個角的工具連接固定部 1 7e 〇 輪轂殻1 1由例如A6 1 5 1等強度較高且輕質的鋁合金製 成’爲中央部分縮小的左右對稱的筒狀部件。在輪轂殼的 大徑部分的外周面形成圓板狀的第1和第2輪轂凸緣1 1 a、 1 1 b。在第1和第2輪轂凸緣1 1 a、1 1 b上形成周向間隔開 的、例如分別等間隔的1 6個輻條固定孔1 1 c、1 1 d。輻條固 定孔1 1 c、1 1 d形成爲節距只錯開半個節距。在輪轂殻1 1的 兩端可裝脫地裝有蓋住其與輪轂軸1 0間間隙的例如合成樹 脂製成的蓋件2 0 a、2 0 b。 第1軸承1 3如圖3和圖4所示，具有設置在輪轂殻1 1上 的第1滾珠座3 1，與輪轂軸1 0螺紋配合的第1滾珠推壓件 3 2，在第1滾珠推壓件3 2與第1滾珠座3 1之間分別與兩者以 接觸方式滾動的滾珠3 3。 第1滾珠座3 1爲例如軸承鋼等鐵系合金製成的帶內緣 -10- (8) 1233893 的筒狀部件，壓入並固定在輪轂殼1 1的大徑部分的內周面 上。在第1滾珠座3 1的內周面上形成接觸滾珠3 3的彎曲的 滾動面3 1 a。 ， 第1滾珠推壓件3 2爲例如軸承鋼等的鐵系合金製成的 筒狀部件。第1滾珠推壓件32具有與形成於輪轂軸10的第1 軸部1 6外周面上的外螺紋部1 6a螺紋配合的內螺紋部32a， 與止轉部件1 5接合以止轉的第2連接固定部32b，和壓入於 第1軸部1 6的外螺紋部1 6 a的軸方向內方的壓入固定部 3 2 c。在第1滾珠推壓件3 2的外周面形成接觸滾珠3 3的彎曲 的滾動面3 2 d。第2連接固定部3 2 b由在第1滾珠推壓部3 2的 外周面沿周向並排形成的多個凹凸構成的鋸齒形部構成。 滾珠3 3在周向有間隔地配置例如等間隔地設有8個。 滾珠3 3通過圖中未示出的保持器可自由滾動地成間隔地保 持著。在滾珠3 3的周圍塡充潤滑脂。 第2軸承1 4如圖2所示，具有設置在輪轂殼1 1上的第2 滾珠座3 4，固定在輪轂軸1 〇上的第2滾珠推壓件3 5，在第2 滾珠推壓件3 5與第2滾珠座3 4之間分別與這兩者接觸並滾 動的滾珠36。第2滾珠座34爲與第1滾珠座31具有相同形狀 和材質的部件。第2滾珠推壓件3 5壓入並固定在輪轂軸1 0 的第1軸部3 6的壓入部1 6 c中。在第2滾珠推壓件3 5的外周 面形成接觸滾珠3 3的彎曲的滾動面3 5 a。第2滾珠推壓件3 5 由突起部1 6 d定位。 止轉部件1 5由例如A6 1 5 1等強度較高且輕質的鋁合金 製成的部件。止轉部件1 5如圖3和圖4所示，爲具有第1內 -11 - (9) 1233893 周面15a和直徑小於第1內周面15a的第2內周面15b的筒狀 部件，在第2內周面15b上形成第1接合部15c，在第1內周 面15a上形成弟2接合部15d°弟1接合部15c與輪穀軸10的 第1軸部1 6的第1連接固定部1 6 g不能回轉地連接固定，由 在第2內周面1 5 t上相互平行而成的長圓形的隙縫構成。第 2接合部15d由在第1內周面15a上具有在周向並排的多個凹 凸而成的鋸齒形部構成，以與第2連接固定部3 2 b的鋸齒形 部接合。該止轉部件1 5由於與輪轂軸1 0和第1滾珠推壓件 3 2不能回轉地連接固定，第1滾珠推壓件3 2可相對輪轂軸 1 0止轉。 接下來對上述結構的前輪轂1的裝配順序進行說明。 在裝配前輪轂1之際，首先，將第2滾珠推壓件35壓入並固 定在輪轂軸1 〇的另一端側。然後，從輪轂殼1 1的兩端壓入 並固定兩個滾珠座31，34。在該狀態下，將滾珠36裝在第 2滾珠推壓件3 5上，而將輪轂殼1 1從輪轂軸1 0的第1軸部i 6 的一端側裝到外周側上。如將一端側朝上、將第1軸部1 6 直立，則容易實現上述作業。 裝上輪轂殼1 1後，將滾珠3 3裝到第1滾珠座3 1中，使 第1滾珠推壓件3 2與輪轂軸1 〇的第1軸部1 6的外螺紋部i 6a 螺紋配合，以進行滾珠接觸狀態的調整作業。滾珠接觸狀 態的調整作業結束後，在止轉部件1 5的第1接合部1 5c與輪 轂軸1 0的第1軸部1 6的第1連接固定部1 6 g配合的狀態下， 爲了使第2接合部1 5 d與第2連接固定部3 2b配合，調整第1 滾珠推壓件32的回轉相位。此時，由於第2連接固定部32b -12- (10) 1233893 和第2接合部·1 5 d由具有多個凹凸的鋸齒構成，可使2個鋸 齒形部嚙合的回轉相位變多並且不會影響軸回轉的範圍 內，將止轉部件1 5裝到第1滾珠推壓件3 2上。由此，止轉 部件1 5相對輪轂軸1 〇的第1軸部1 6和第1滾珠推壓件3 2不能 回轉地安裝著，第1滾珠推壓件32可相對輪轂軸10止轉。 這些作業結束時，輪轂殻1 1的兩端裝上蓋件20a、 2 0b，同時，將第2軸部17裝到第1軸部16上，以防止止轉 部件15脫落。最後，在輪轂軸10的內周面的貫通孔中貫通 並設置快速釋放機構5 0。由此，前輪轂裝配完成。 在此，由於不是用2個滾珠推壓件而是只回轉第1滾珠 推壓件32來進行滾珠接觸狀態的調整作業，使得滾珠接觸 狀態調整作業容易進行。另外，由於只是與回轉相位相配 合地裝上止轉部件1 5，來進行第1滾珠推壓件3 2的止轉 的，因此，止轉作業容易進行。 另外的實施例 (a )在前述實施例中，止轉部件1 5和滾珠推壓件3 2 之間的內外周面相接合，但也可如圖5所示，使端面相互 接合。在圖5中，第1滾珠推壓件1 3 2的在與止轉部件1 1 5相 對置的端面，形成由放射狀的滾花部構成的第2連接固定 部1 3 2b。止轉部件1 1 5爲筒狀部件，一端面形成由隙縫構 成的第1接合部（圖中未示出），與第1滾珠推壓件1 3 2相 對置的另一端面形成由放射狀滾花部構成的第2接合部 1 1 5 d。如此止轉構造也可獲得與前述實施例同樣的效果。 (b )在前述實施例中，第1連接固定部和第2接合部 -13- (11) 1233893 是在回轉相位的2處接合的，而第2連接固定部與第2接合 部是在回轉相位的多處接合，但也可相反。即，輪轂軸和 止轉部件可在回轉相位的多處接合，而止轉部件和第1滾 珠推壓件在回轉相位的2處接合。 (c)在前述實施例中，本發明適用於前輪轂，但本 發明也可適用於後輪轂。另外，輪轂的形態並不限於前述 實施例，特別是，輪轂殻的形態不是一體型，而是由多個 部件構成的分割型等，可以是任一形狀。此外，可在輪轂 內裝有制動調整機構或發電機構。 根據本發明，由於是僅回轉第1滾珠推壓件來進行滾 珠接觸狀態的調整作業，因此，滾珠接觸狀態調整作業容 易進行。另外，由於是只與回轉相位相配合地安裝止轉部 件來進行第1滾珠推壓件的止轉的，因此，也容易實現止 轉作業。 【圖式簡單說明】 圖1爲採用本發明一實施例的自行車的側視圖。 圖2爲本發明一實施例的前輪轂的半剖視圖。 圖3爲其右側部分的局剖視圖。 圖4爲示出軸承一部分的分解透視圖。 圖5爲另一實施例的相當於圖3的視圖。 【符號說明】 1 前輪轂 -14- (12) (12)1233893 1 0輪轂軸 1 1輪轂殼 1 1 a、1 1 b輪轂凸緣 1 1 c輻條固定孔 1 3第1軸承 1 4第2軸承 1 5止轉部件 15a第1內周面 15b第2內周面 1 5 c第1接合部 1 5 d第2接合部 1 6第1軸部 16a外螺紋部 16b內螺紋部 1 6 c壓入部 1 6 d突起部 16e叉固定部 16g第1連接固定部 第2軸部 17a外螺紋部 17b叉固定部 17c滾花部 17d凸緣部 20a 、 20b 蓋件 (13) (13)1233893 3 1第1滾珠座 3 2第1滾珠推壓件 3 2 a內螺紋部 32b第2連接固定部 3 2 c壓入固定部 32d滾動面 33滾珠 34 第2滾珠座 35第2滾珠推壓件 3 5a滾動面 3 6第1軸部 50快速釋放機構 5 1凸輪桿 52螺母 98前叉 99輻條 1 〇 1自行車 102 車架 1 0 4 把手 1 0 5驅動部 106前輪 1 〇 7後輪 1 1 5止轉部件 115d第2接合部 16- 1233893 (14) 1 3 2第1滾珠推壓件 132b第2連接固定部1233893 (1) 发明 Description of the invention [Technical field to which the invention belongs]. The present invention relates to a bicycle hub, and more particularly, to a bicycle hub in which a wheel is rotatably mounted on a bicycle frame. [Prior Art] On a bicycle wheel, a hub for rotatably mounting the wheel on a bicycle frame is provided at the center of the wheel. The conventional wheel valley has a hub shaft which is non-rotatably mounted to a frame, a hub body arranged on the outer peripheral side of the hub shaft, and a pair of left and right bearings located between the hub shaft and the hub body. Externally threaded portions are formed on the outer periphery of both ends of the hub shaft. A pair of left and right hub flanges are formed on the outer periphery of the hub body for fastening spokes connected to the rim of the wheel. The bearing has a ball seat which is integrally or separately provided with the hub body inside the hub body, a ball pusher with an internal thread portion which is screwed with the external thread portion of the hub shaft and screwed into the hub shaft, and a ball seat. And ball pushing parts. The balls are housed in cages arranged at predetermined intervals in the circumferential direction, and are arranged between the ball pushers and the ball seats while being housed in the cages. The ball pusher is stopped by a lock nut mounted on its axially outer side. The assembly work of the conventional hub thus constructed is performed as follows. First, when the hub body is mounted on the hub shaft and the ball seat is a separate piece, the ball seat is mounted on the hub body. Then, install the -4-i (2) 1233893 ball in the holder into the ball holder and apply grease. When the ball is installed, screw the ball pushing parts from the left and right of the hub shaft to set the hub body on the hub shaft so that it can rotate freely. At this time, while adjusting the axial position of the hub body, the so-called ball contact state is adjusted to adjust the pressing condition of the ball pressing member. Finally, use the lock nut to stop the ball pusher. In the aforementioned conventional structure, it is necessary to attach ball pushers from both ends of the hub shaft to adjust the ball contact state, and adjusting the ball contact state becomes a cumbersome task. However, in order to stop the screwed ball pressing member from rotating, a lock nut must be provided, and the operation of stopping the rotation is troublesome. SUMMARY OF THE INVENTION An object of the present invention is to facilitate the adjustment operation of the contact state of the balls and the rotation stop operation of the ball pressing member. A bicycle hub according to a first aspect of the present invention is a hub for rotatably mounting a wheel relative to a bicycle frame, and includes a pair of bearings and a rotation preventing member for a hub shaft, a hub body '. The hub shaft is rotatably mounted on the frame, and has a first threaded portion on one end side and a first connection and fixing portion adjacent to the outer threaded portion in the axial direction. The hub body has a pair of left and right first and second hub flanges' and is located on the outer peripheral side of the hub shaft. A pair of bearings is located between the wheel valley body and the hub shaft, and has a pair of left and right first and second ball seats provided on the hub body, an internal thread portion that is screwed with the external thread portion of the hub shaft, and a rotation stop The first ball pressing member of the second connection and fixing part is provided on the other end side of the wheel valley shaft so as to be unable to rotate with respect to the hub shaft. The second ball pressing member is provided with two ball pressing members and a rain ball seat. (3) 1233893 Ball rolling in contact with each other. The anti-rotation member is a non-rotation member that stops the rotation of the first ball pressing member with respect to the hub shaft. The anti-rotation member has a first position on the inner peripheral side of the anti-rotation member that is at least one of the rotation phase with the hub shaft The first joint portion in which the connection fixing portion is non-rotatably engaged, and the second joint portion in which the second connection fixing portion of the first ball pressing member is non-rotatably engaged at any one of a plurality of or one rotation phase. When assembling this bicycle hub, first, when the second ball pressing member is a separate body, the second ball pressing member is fixed to the other end side of the hub shaft. Then, install the ball seat on the hub with the ball seat as a separate body. In this state, the ball is attached to the second ball pressing member, and the hub body is attached to the outer peripheral side of the hub shaft from one end side of the hub shaft. This operation can be easily achieved by setting one end side up and setting the hub shaft upright. After the hub body is mounted, the ball is mounted on the first ball seat, and the first ball pusher is threadedly engaged with the hub shaft to adjust the ball contact state. After the adjustment of the ball contact state is completed, the rotation phase of the first ball pressing member is adjusted so that the second engagement is performed while the first joint of the anti-rotation member is mated with the first connection and fixing portion of the hub shaft. The rotation phase of the hub shaft is adjusted so that the first joint portion and the first joint portion are engaged with the second joint fixing portion of the non-rotation member and the second joint fixing portion of the non-rotation member. 1 The connection and fixing portion cooperates to thereby prevent the rotation-preventing member from being rotatably mounted with respect to the hub shaft and the second ball pressing member. Here, since only the first ball pressing member is rotated to perform the adjustment operation of the ball contact state, the adjustment operation of the ball contact state is easy. In addition, the anti-rotation operation can be performed easily by attaching the anti-rotation member only to match the rotation phase to perform the first ball -6-(4) 1233893. A bicycle hub according to a second aspect of the present invention is the hub according to the first aspect of the present invention, wherein the hub shaft has a first shaft portion that is hollow at least on the first end side and is provided with first and second ball pressing members, and The second shaft portion is a flange portion for preventing the rotation-preventing member from falling off, and is threadedly engaged with the inner peripheral surface on one end side of the first shaft portion. In this case, since the rotation preventing member can be prevented from falling off by the second shaft portion, it is not necessary to provide the rotation preventing member with a structure for preventing the rotation. A bicycle hub according to a third aspect of the present invention is the hollow shaft of the hub according to the first or second aspect of the present invention, wherein the hub shaft is a quick release mechanism that is easily inserted into and detached from the frame. In this case, it is easy to perform the ball contact state adjustment work and the rotation stop adjustment work of the hub having the quick release mechanism. A bicycle hub according to a fourth aspect of the present invention is the hub according to any one of the first to third aspects of the present invention, wherein the rotation stop member has a first inner peripheral surface and a second inner peripheral surface having a diameter smaller than the first inner peripheral surface. The cylindrical member has a first connecting and fixing portion of the hub shaft having chamfered portions provided in parallel with each other on an outer peripheral surface of one end side of the hub shaft, and a second connecting peripheral fixing portion of the first ball pressing member has a circumferential direction on the outer peripheral surface. The second jagged portion formed by a plurality of irregularities, the first joint portion of the anti-rotation member has an oblong slit formed parallel to each other on the second inner peripheral surface, and the second joint portion of the anti-rotation member has The first zigzag portion is formed on the first inner peripheral surface by being joined to the second zigzag portion. At this time, after fitting the gap between the anti-rotation member and the chamfered portion of the hub shaft, to mount the first anti-rotation member to the second serrated portion, the first ball pressing member is rotated. When the anti-rotation member is mounted on the first ball pressing member, the first ball pressing member is stopped. Here, the rotation of the -7- (5) 1233893 two sawtooth-shaped parts is increased by stopping the rotation by the key-toothed portion having a plurality of irregularities. The rotation can be stopped within a range that does not affect the rotation of the shaft. The parts are attached to the first ball pressing member. A bicycle hub according to a fifth aspect of the present invention is "in the hub according to any one of the first to fourth aspects of the present invention", and the inner peripheral surface of the first ball pressing member is press-fitted inwardly in the axial direction of the external thread portion of the hub shaft. part. At this time, since the first ball pressing member is pushed in, it is difficult to further rotate the first ball pressing member. A bicycle hub according to a sixth aspect of the present invention is the hub according to any one of the first to fifth aspects of the present invention, wherein the second ball pressing member is another member fixed to the hub shaft by press-fitting. At this time, since the second ball pressing member is a separate member, changing the material of the hub shaft allows the hub shaft to be lightweight and maintain high strength. A bicycle hub according to a seventh aspect of the present invention is the hub according to the fifth aspect of the present invention, wherein the hub shaft is made of an aluminum alloy, and the first and second ball pressing members are made of an iron-based alloy. At this time, the ball pusher, which is easy to wear, is made of iron alloy, which is lightweight and maintains wear resistance. The bicycle hub according to an eighth aspect of the present invention is that, in the hub according to any one of the first to seventh aspects of the present invention, the hub shaft is mounted on a front fork of a bicycle. In this case, it is easy to adjust the ball contact state of the hub for the front wheel for idling and to perform the rotation stop operation. [Embodiment] In FIG. 1, a bicycle 101 using an embodiment of the present invention has a frame 1 102 including a front fork 98, and a handle 104 fixed to the front fork 98 is composed of a chain and feet. The driving part 105 consisting of a pedal and a derailleur, etc., and the front and rear wheels 106, 107 which are mounted on the front (6) 1233893 of the frame 1 02 and have spokes 9 9 are provided. In FIG. 2, the front hub 1 is fixed to both left and right front forks 98 with spokes 99 by a known quick-release mechanism 50 having a cam lever 51 and a nut 5 2. Fasten to two hub flanges 1 la, 1 lb. The front hub 1 has a hub shaft 1 〇 fixed to a front fork 98, a hub housing 11 disposed on the outer peripheral side of the hub shaft 10, and first and second bearings located between the hub shaft 10 and the hub housing 11. 1 3, 1 4 and a rotation preventing member 15 which stops the first ball pressing member 3 2 of the first bearing 13 from the hub shaft 10. The hub shaft 10 is made of, for example, an A7075 aluminum alloy having high strength, and both ends thereof are fixed to the front end portion of the front fork 98 by a quick release mechanism 50. The inside of the hub shaft 10 passes through the quick release mechanism 50, and the shaft has a hollow first shaft portion 16 and a hollow second shaft portion 17 threadedly engaged with the first shaft portion. The first shaft portion 16 is a shaft that constitutes most of the hub shaft 10, and while two bearings 13 and 14 are mounted at both ends, one end (the left end in FIG. 2) is threadedly fitted with the second shaft portion 17. A male screw portion 16a is formed on the outer peripheral surface of one end side of the first shaft portion 16 to be screwed with the first ball pusher 32 of the first bearing 13 and a second shaft portion 1 is formed on the inner peripheral surface of one end. 7 Thread-fitting internal thread portion 16b. In addition, a first connection fixing portion 16g is formed on the outer peripheral surface of one end, and the connection fixing portion 16g is formed of chamfered portions which are connected and fixed to the rotation preventing member 15 in a non-rotatable manner and are arranged in parallel with each other. On the other end side of the first shaft portion 16, a press-in portion 1 6 c for press-fitting and fixing the second ball pusher 3 5 of the second bearing 1 4 is formed, and is adjacent to the press-in portion 16 c outward in the axial direction. With the protruding portion 16d for positioning. In addition, at the other end (the right end in FIG. 2), a small-diameter fork fixing portion 16 e for fixing the front fork 98 is formed. (7) 1233893 A knurled portion 6 f is formed on the end surface of the stepped portion of the fork fixing claw portion 16 e to form a radial concavity and convexity for stopping the front fork 9 8 from rotating. The second shaft portion 17 is a cylindrical member having a diameter smaller than that of the first shaft portion 16, and an externally threaded portion 1 7 a that is threaded to the internally threaded portion 6 of the first shaft portion 6 is formed on the outer peripheral surface of the right end in FIG. 2 . At the left end, a small-diameter fork-fixing crotch 1 7 b for fixing the front fork 9 8 is formed. A knurled portion 7c is formed on the end surface of the stepped portion with the fork fixing portion 17b to form a radial concavity and to stop the front fork 98 from rotating. A large-diameter flange portion 17d is formed between the outer screw portion 17a and the fork fixing portion 17b. The flange portion 17d is provided to prevent the rotation preventing member 15 from falling out. A tool connecting and fixing part with six corners that can be turned by the tool is formed on the inner peripheral surface of one end side of the second shaft part 17. The wheel housing 11 is made of a high-strength and lightweight aluminum alloy such as A6 1 5 1. It becomes a left-right symmetrical cylindrical member with a reduced central portion. Disk-shaped first and second hub flanges 1 1 a and 1 1 b are formed on the outer peripheral surface of the large-diameter portion of the hub shell. In the first and second hub flanges 1 1 a, 1 1 b, circumferentially spaced, for example, 16 spoke fixing holes 1 1 c, 1 1 d are formed at equal intervals, respectively. The spoke fixing holes 1 1 c and 1 1 d are formed so that the pitch is staggered by only half a pitch. Caps 20a and 2b made of, for example, synthetic resin are detachably mounted on both ends of the hub shell 11 to cover the gap between the hub shell and the hub shaft 10. As shown in FIGS. 3 and 4, the first bearing 13 has a first ball seat 3 1 provided on the hub shell 11 and a first ball pressing member 3 2 threadedly engaged with the hub shaft 10. Between the ball pressing member 32 and the first ball base 31, the balls 33 are rolled in contact with the two. The first ball seat 31 is a cylindrical member with an inner edge -10- (8) 1233893 made of an iron-based alloy such as bearing steel, and is press-fitted and fixed to the inner peripheral surface of the large-diameter portion of the hub shell 11 . A curved rolling surface 3 1 a is formed on the inner peripheral surface of the first ball seat 31 to contact the ball 3 3. The first ball pressing member 32 is a cylindrical member made of an iron-based alloy such as bearing steel. The first ball pressing member 32 has an internal thread portion 32a that is threadedly engaged with the external thread portion 16a formed on the outer peripheral surface of the first shaft portion 16 of the hub shaft 10. The first thread pressing portion 32 is engaged with the rotation preventing member 15 to prevent rotation. 2 The connection fixing portion 32b and the press-fitting fixing portion 3 2 c which is pressed inward in the axial direction of the male screw portion 16 a of the first shaft portion 16. A curved rolling surface 3 2 d is formed on the outer peripheral surface of the first ball pressing member 3 2 to contact the ball 3 3. The second connection fixing portion 3 2 b is composed of a saw-toothed portion composed of a plurality of irregularities formed side by side in the circumferential direction on the outer peripheral surface of the first ball pressing portion 32. The balls 33 are arranged at intervals in the circumferential direction, for example, eight balls are provided at regular intervals. The balls 33 are held freely at intervals by a cage (not shown). Apply grease around the balls 3 3. As shown in FIG. 2, the second bearing 14 has a second ball seat 3 4 provided on the hub shell 11, a second ball pressing member 35 fixed to the hub shaft 10 and pressed against the second ball. The balls 36 which are in contact with and roll between the pieces 35 and the second ball seat 34 are respectively. The second ball base 34 is a member having the same shape and material as the first ball base 31. The second ball pressing member 3 5 is press-fitted and fixed to the press-in portion 16 c of the first shaft portion 36 of the hub shaft 10. A curved rolling surface 3 5 a is formed on the outer peripheral surface of the second ball pressing member 3 5 to contact the ball 3 3. The second ball pressing member 3 5 is positioned by the protruding portion 16 d. The anti-rotation member 15 is a member made of a high-strength and lightweight aluminum alloy such as A6 1 51. As shown in FIGS. 3 and 4, the non-rotation preventing member 15 is a cylindrical member having a first inner -11-(9) 1233893 peripheral surface 15a and a second inner peripheral surface 15b having a diameter smaller than the first inner peripheral surface 15a. A first joint portion 15c is formed on the second inner peripheral surface 15b, and a second joint portion 15d is formed on the first inner peripheral surface 15a. The first joint portion 15c and the first shaft portion 16 of the wheel valley shaft 10 are formed. The connection and fixing portion 16 g is connected and fixed in a non-rotatable manner, and is composed of an oblong slit formed on the second inner peripheral surface 15 t in parallel with each other. The second joint portion 15d is formed of a sawtooth portion having a plurality of concaves and convexes arranged side by side in the circumferential direction on the first inner peripheral surface 15a, and is engaged with the sawtooth portion of the second connection fixing portion 3 2b. Since the anti-rotation member 15 cannot be rotatably connected and fixed to the hub shaft 10 and the first ball pressing member 32, the first ball pressing member 32 can be stopped relative to the hub shaft 10. Next, an assembling procedure of the front hub 1 having the above-mentioned structure will be described. When assembling the front hub 1, first, the second ball pusher 35 is pressed into and fixed to the other end side of the hub shaft 10. Then, the two ball seats 31, 34 are pressed into and fixed from both ends of the hub shell 11. In this state, the ball 36 is attached to the second ball pressing member 35, and the hub shell 11 is attached to the outer peripheral side from one end side of the first shaft portion i 6 of the hub shaft 10. If the one end side faces upward and the first shaft portion 16 is erected, the above operation can be easily performed. After the hub shell 11 is attached, the ball 3 3 is mounted in the first ball seat 31, and the first ball pusher 32 and the external thread portion i 6a of the first shaft portion 16 of the hub shaft 10 are threaded. Cooperate to adjust the ball contact state. After the adjustment of the ball contact state is completed, in a state where the first joint portion 15c of the anti-rotation member 15 and the first connection fixing portion 16g of the first shaft portion 16 of the hub shaft 10 are engaged, in order to make the The second joint portion 15 d cooperates with the second connection fixing portion 3 2b to adjust the rotation phase of the first ball pressing member 32. At this time, since the second connection fixing portion 32b -12- (10) 1233893 and the second joint portion · 1 5 d are formed of saw teeth having a plurality of irregularities, the rotation phase of the engagement of the two saw-tooth portions can be increased and the rotation phase can be reduced. Within the range that will affect the rotation of the shaft, attach the anti-rotation member 15 to the first ball pressing member 3 2. Accordingly, the rotation preventing member 15 is rotatably mounted with respect to the first shaft portion 16 and the first ball pressing member 32 of the hub shaft 10, and the first ball pressing member 32 can stop rotation relative to the hub shaft 10. At the end of these operations, cover members 20a, 20b are attached to both ends of the hub shell 11 and the second shaft portion 17 is attached to the first shaft portion 16 to prevent the rotation preventing member 15 from falling off. Finally, a quick release mechanism 50 is penetrated through a through hole in the inner peripheral surface of the hub shaft 10. This completes the assembly of the front hub. Here, instead of using two ball pressing members, only the first ball pressing member 32 is rotated to perform the ball contact state adjustment operation, so that the ball contact state adjustment operation is easy to perform. In addition, since the anti-rotation member 15 is installed only in accordance with the rotation phase to perform the anti-rotation of the first ball pressing member 32, the anti-rotation operation can be easily performed. Another Embodiment (a) In the foregoing embodiment, the inner and outer peripheral surfaces between the rotation preventing member 15 and the ball pressing member 3 2 are joined, but the end faces may be joined to each other as shown in FIG. 5. In Fig. 5, a second connection fixing portion 1 3 2b formed of a radial knurled portion is formed on an end surface of the first ball pressing member 1 3 2 opposite to the rotation preventing member 1 15. The anti-rotation member 1 1 5 is a cylindrical member, and one end face is formed with a first joint portion (not shown) formed by a gap, and the other end face opposite to the first ball pressing member 1 3 2 is formed in a radial shape. The second joint portion 1 1 5 d formed by the knurled portion. Such a rotation-preventing structure can also obtain the same effect as the aforementioned embodiment. (b) In the foregoing embodiment, the first connection fixing portion and the second joining portion-13- (11) 1233893 are joined at two positions in the rotation phase, and the second connection fixing portion and the second joining portion are rotating Multiple phases are joined, but the reverse is also possible. That is, the hub shaft and the anti-rotation member can be joined at a plurality of points in the rotation phase, and the anti-rotation member and the first ball pressing member are joined at two points in the rotation phase. (c) In the foregoing embodiments, the present invention is applied to the front hub, but the present invention may also be applied to the rear hub. In addition, the shape of the hub is not limited to the aforementioned embodiment, and in particular, the shape of the hub shell is not an integrated type, but a split type composed of a plurality of members, etc., and may have any shape. In addition, a brake adjustment mechanism or a power generation mechanism may be installed in the hub. According to the present invention, since the adjustment operation of the ball contact state is performed by turning only the first ball pressing member, the adjustment operation of the ball contact state can be easily performed. In addition, since the anti-rotation member is installed only in cooperation with the rotation phase to perform the anti-rotation of the first ball pressing member, the anti-rotation operation can be easily performed. [Brief Description of the Drawings] FIG. 1 is a side view of a bicycle employing an embodiment of the present invention. FIG. 2 is a half cross-sectional view of a front hub according to an embodiment of the present invention. FIG. 3 is a partial cross-sectional view of a right part thereof. FIG. 4 is an exploded perspective view showing a part of the bearing. FIG. 5 is a view corresponding to FIG. 3 according to another embodiment. [Symbol description] 1 front hub -14- (12) (12) 1233893 1 0 hub shaft 1 1 hub shell 1 1 a, 1 1 b hub flange 1 1 c spoke fixing hole 1 3 first bearing 1 4 second 2 Bearing 1 5 non-rotating member 15a first inner peripheral surface 15b second inner peripheral surface 1 5 c first joint portion 1 5 d second joint portion 1 6 first shaft portion 16 a male screw portion 16 b female screw portion 1 6 c Entry portion 16 d Projection portion 16e Fork fixing portion 16g First connection fixing portion Second shaft portion 17a Male screw portion 17b Fork fixing portion 17c Knurled portion 17d Flange portions 20a, 20b Cover (13) (13) 1233893 3 1 1st ball seat 3 2 1st ball pushing member 3 2 a female screw portion 32b 2nd connection fixing portion 3 2 c press-fitting fixing portion 32d rolling surface 33 ball 34 2nd ball seat 35 2nd ball pressing member 3 5a Rolling surface 3 6 1st shaft 50 Quick release mechanism 5 1 Cam lever 52 Nut 98 Front fork 99 Spoke 1 〇1 Bicycle 102 Frame 1 0 4 Handle 1 0 5 Drive unit 106 Front wheel 1 〇7 Rear wheel 1 1 5 Turning member 115d 2nd joint 16-1233893 (14) 1 3 2 1st ball pusher 132b 2nd connection fixing part